31068899 has 4 divisors (see below), whose sum is σ = 31313664. Its totient is φ = 30824136.

The previous prime is 31068893. The next prime is 31068907. The reversal of 31068899 is 99886013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99886013 = 9343 ⋅10691.

It is a cyclic number.

It is not a de Polignac number, because 31068899 - 2¹⁶ = 31003363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31068893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122192 + ... + 122445.

It is an arithmetic number, because the mean of its divisors is an integer number (7828416).

Almost surely, 2^31068899 is an apocalyptic number.

31068899 is a deficient number, since it is larger than the sum of its proper divisors (244765).

31068899 is a wasteful number, since it uses less digits than its factorization.

31068899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244764.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 31068899 is about 5573.9482415968. The cubic root of 31068899 is about 314.3706220513.

The spelling of 31068899 in words is "thirty-one million, sixty-eight thousand, eight hundred ninety-nine".